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Algebra Relacional a SQL - Quiz

Froggy Jumps

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Reto rápido sobre álgebra relacional y SQL

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Algebra Relacional a SQL - Quiz
 

Froggy Jumps

Algebra Relacional a SQL - QuizOnline version

Reto rápido sobre álgebra relacional y SQL

by Mtra. Maricela Aguilar Illán
1

La Selección (σ) en álgebra relacional equivale en SQL a?

2

La Proyección (π) equivale en SQL a?

3

¿Qué hace UNION vs UNION ALL?

4

Intersección (A ∩ B) se logra con…

5

Diferencia (A − B) se logra con…

6

¿Qué encuentra materias sin inscripciones?

7

¿Qué ordena de mayor a menor?

8

¿Qué operador es “existe al menos una fila”?

9

¿Qué filtra agregados tras agrupar?

10

¿Qué evita producto cartesiano accidental?

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